/*!	 layer_duplicate.h
**	 Header file for implementation of the "Duplicate" layer
**
**	Copyright (c) 2002-2005 Robert B. Quattlebaum Jr., Adrian Bentley
**	Copyright (c) 2008 Chris Moore
**
**	This package is free software; you can redistribute it and/or
**	modify it under the terms of the GNU General Public License as
**	published by the Free Software Foundation; either version 2 of
**	the License, or (at your option) any later version.
**
**	This package is distributed in the hope that it will be useful,
**	but WITHOUT ANY WARRANTY; without even the implied warranty of
**	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
**	General Public License for more details.
**
*/

#ifndef __SYNFIG_LAYER_DUPLICATE_H__
#define __SYNFIG_LAYER_DUPLICATE_H__

#include <synfig/valuenodes/valuenode_duplicate.h>
#include "layer_composite_fork.h"
#include <synfig/time.h>

namespace synfig
{

class Layer_Duplicate : public synfig::Layer_CompositeFork
{
    SYNFIG_LAYER_MODULE_EXT

private:
    mutable ValueBase param_index;
    mutable synfig::Mutex mutex;

public:

    Layer_Duplicate();

    // Duplicates the Layer
    virtual Layer::Handle clone(etl::loose_handle<Canvas> canvas, const GUID& deriv_guid = GUID())const;
    virtual bool set_param(const String & param, const synfig::ValueBase &value);
    virtual ValueBase get_param(const String & param)const;
    virtual Color get_color(Context context, const Point &pos)const;
    virtual ValueNode_Duplicate::Handle get_duplicate_param()const;
    virtual bool accelerated_render(Context context, Surface *surface, int quality, const RendDesc &renddesc, ProgressCallback *cb)const;
    virtual bool accelerated_cairorender(Context context, cairo_t *cr, int quality, const RendDesc &renddesc, ProgressCallback *cb)const;
    virtual Vocab get_param_vocab()const;
    virtual bool reads_context()const
    {
        return true;
    }

protected:
    virtual rendering::Task::Handle build_rendering_task_vfunc(Context context) const;
}; // END of class Layer_Duplicate

}; // END of namespace synfig

#endif